How severe is CVE-2018-18989?

CVE-2018-18989 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-18989 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-18989?

CVE-2018-18989 primarily affects Omron Cx-one. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2018-18989?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2018-18989 published?

CVE-2018-18989 was published on 2018-12-04 and last updated on 2026-06-17.

CVE-2018-18989

CVE-2018-18989 is a high-severity vulnerability in Omron Cx-one with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-416.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 6.8
EPSS exploit prediction: 2% (73rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-416
Affected product: Omron Cx-one
Published: 2018-12-04
Last modified: 2026-06-17

Description

In CX-One Versions 4.42 and prior (CX-Programmer Versions 9.66 and prior and CX-Server Versions 5.0.23 and prior), when processing project files, the application fails to check if it is referencing freed memory. An attacker could use a specially crafted project file to exploit and execute code under the privileges of the application.

Frequently asked questions

What is CVE-2018-18989?: In CX-One Versions 4.42 and prior (CX-Programmer Versions 9.66 and prior and CX-Server Versions 5.0.23 and prior), when processing project files, the application fails to check if it is referencing freed memory. An attacker could use a specially crafted project file to exploit and execute code under the privileges of the application.
How severe is CVE-2018-18989?: CVE-2018-18989 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-18989 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-18989?: CVE-2018-18989 primarily affects Omron Cx-one. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2018-18989?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2018-18989 published?: CVE-2018-18989 was published on 2018-12-04 and last updated on 2026-06-17.

References

Affected products (3)

cpe:2.3:a:omron:cx-one:*:*:*:*:*:*:*:*
cpe:2.3:a:omron:cx-programmer:*:*:*:*:*:*:*:*
cpe:2.3:a:omron:cx-server:*:*:*:*:*:*:*:*

More vulnerabilities in Omron Cx-one

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CVE-2020-27259 — High (CVSS 8.8): The Omron CX-One Version 4.60 and prior may allow an attacker to supply a pointer to arbitrary memory locations, which…
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CVE-2021-27413 — High (CVSS 7.8): Omron CX-One Versions 4.60 and prior, including CX-Server Versions 5.0.29.0 and prior, are vulnerable to a stack-based…
CVE-2020-27257 — High (CVSS 7.8): This vulnerability allows local attackers to execute arbitrary code due to the lack of proper validation of…
CVE-2018-19027 — High (CVSS 7.8): Three type confusion vulnerabilities exist in CX-One Versions 4.50 and prior and CX-Protocol Versions 2.0 and prior…

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